transmission AUDI A8 1999 D2 / 1.G AHA Engine On Board Diagnostic Workshop Manual

01-2

Malfunction Indicator Lamp (MIL)
function, checking

If a malfunction is recognized by the Engine
Control Module (ECM) or the Transmission
Control Module (TCM), this is indicated by the
MIL coming on.

Malfunction Indicator Lamp (MIL)
Note:
When a recognized malfunction switches on the MIL, it will either blink or
light continuously. In either case, DTC memory must be checked page 01
-16
.
If the MIL starts to blink, there is a malfunction that can lead to
damage of the Three Way Catalytic Converter (TWC). In this case,
driving should only continue using reduced power. The malfunction
must be rectified as quickly as possible. If the MIL lights continuously, there is a malfunction that affects
exhaust emissions. In this case, DTC memory must be checked, and
the malfunction must be rectified as quickly as possible. Some malfunctions may occur without causing the MIL to come on.
When driveability or performance problems are reported, and there is
no indication from the MIL, the operation of the MIL must be checked.
In addition, DTC memory must be checked, as there may be
malfunctions stored that do not switch the MIL on immediately.
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Battery Positive Voltage (B+) OK (at least 11
volts)
Engine and transmission GND connections
OK Electrical Wiring Diagrams,
Troubleshooting & Component Locations
binder

Fuel pump relay OK
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01-10

4D0907551A 2.8L V6/5V MOTR HS D01 Coding 06051
WSC 00000

Indicated on display (ECM identification and coding, example)
4D0 _ _
_ Engine Control Module (ECM) Part No.
2.8 L Engine displacement
V6/5V Engine type:
V-engine, 6-cylinder, 5-valve
MOTR Motronic
HS
AT Manual transmission
Automatic transmission
D.. ECM software version
Coding ECM coding
Coding variations page 01
-14

WSC
12345 Plant number: indicates where VAG1551 scan tool was used
for last coding and/or adaptation (as long as factory coding
has not been changed, WSC 00000 is displayed)
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01-11

Notes:
If the ECM version that corresponds to the
vehicle is not displayed, replace ECM page
01
-68
. Incorrect ECM coding leads to:

Performance problems (e.g. jerky shifting,
abrupt load changes, etc.)
Increased fuel consumption
Elevated exhaust gas values
Reduction in transmission service life
Storage of non-existent malfunctions in DTC
memory
Necessary functions not being carried out
(oxygen sensor control, actuation of EVAP
canister system, etc.)

-
Press button to advance through program
sequence.
Rapid data transfer
HELP
Select function XX

Indicated on display
- Continue as specified in procedures for specific OBD functions.
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01-13

4D0907551A 2.8L V6/5V MOTR HS D01 Coding 06051
WSC 00000

Indicated on display (ECM identification and coding, e.g. 06051)
-
Press button to advance through program sequence.
Rapid data transfer
HELP
Select function XX

Indicated on display
Notes:
The Motronic ECM -J220- only uses the code that has been entered after
the ignition has been switched off once. Incorrect coding leads to: - Press buttons -0- and -6- to select "End Output" function 06, and press
-Q- button to confirm input.
Performance problems (e.g. jerky shifting, abrupt load changes, etc.)Increased fuel consumptionElevated exhaust gas valuesStorage of non-existent malfunctions in DTC memoryReduction in transmission service life
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01-14
ECM coding variations

Country/Emissions
Drivetrain/Options
Transmission
Vehicle type
00
= ------------------ 0
= Front-wheel-drive without
traction control (ASR) 0
= 5-speed manual 0
= ------------
------
01
= ------------------ 1
= Front-wheel-drive with traction
control (ASR) 1
= ------------------ 1
= A4
02
= ------------------ 2
= All-wheel-drive without traction
control (ASR) 2
= ------------------ 2
= ------------
------
03
= ------------------ 3
= All-wheel-drive with traction
control (ASR) 3
= ------------------ 3
= ------------
------
04
= ------------------ 4
= ------------------ 4
= ------------------ 4
= ------------
------
05
= ------------------ 5
= ------------------ 5
= Automatic trans.
01V 5
= ------------
------
06
= USA, equipped with EVAP system Leak
Detection Pump (LDP) 6
= ------------------ 6
= ------------------ 6
= ------------
------
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01-15

Code number structure (example)





USA vehicle with Leak Detection Pump (LDP): 0 6
Front-wheel-drive without traction control (ASR): 0
Automatic transmission 01V: 5
Audi A4: 1
Code number: 0 6 0 5 1 Note:
Vehicles with traction control (ASR) can be recognized by the ASR control light in the instrument cluster or by ABS/ASR On
Board Diagnostic (OBD).
Repair Manual, Brake System, Repair Group 01
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01-47

Diagnostic Trouble
Code (DTC)
Malfunction text
MIL
Corrective action
SAE
VAG



P1602 18010 Power Supply (B+) Terminal 30
Low Voltage Off
- Check voltage supply to ECM page 24
-
90

P1606 18014 Rough Road Spec Engine Torque ABS-
ECU
Electrical Malfunction Off
- Check ABS control module signal for
rough road recognition page 24
-174

P1612 18020 Electronic Control Module
Incorrect Coding
(Vehicle with automatic transmission is
coded for manual transmission.) Immed.
- Code ECM page 01
-12
Electronic Control Module
Incorrect Coding
(Vehicle with ASR is not coded for ASR) Off
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01-48

Diagnostic Trouble
Code (DTC)
Malfunction text
MIL
Corrective action
SAE
VAG



P1624 18032 MIL Request Sign. active Immed.
Repair Manual, 5 Spd. Automatic Transmission 01V,
Repair Group 01 - Check DTC memory for Transmission Control Module
(TCM) and correct malfunctions
P1626 18034 CAN-Bus
Missing Message from
Transm. Contr. 2 Dcy
- Check CAN-Bus page 24
-172
P1640 18048 Internal Contr. Module
(EEPROM)
Error 2 Dcy
- Replace ECM page 01
-68
P1681 18089 Contr. Unit Programming
Programming not Finished Immed.
- Replace ECM page 01
-68
P1690 18098 Malfunction Indicator Light
Malfunction Off
- Check wire from ECM to Malfunction Indicator Light
(MIL) page 01
-2
Note for DTC P1624/18032:
If this malfunction is detected by the Transmission Control Module (TCM), the MIL is switched on by the ECM. In this case,
the ECM stores the malfunction "MIL Request Sign. active" (DTC P1624/18032). After repairing the malfunction, erase DTC
memory of the ECM.
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